TYCHO BRAHE

Arrivals, time in port and the load/discharge inferred from the draught change — detected from AIS track history. An open call means the vessel is still in port (no departure observed yet).

1. Helsingor

   no cargo change

   → · 16 h in port· draught 5.0→5.0 m
2. Helsingor

   no cargo change

   → · 13 h in port· draught 5.0→5.0 m
3. Helsingor

   no cargo change

   → · 2 h in port· draught 5.0→5.0 m
4. Helsingborg

   no cargo change

   → · 2 h in port· draught 5.0→5.0 m
5. Helsingborg

   no cargo change

   → · 5 h in port· draught 5.0→5.0 m

Method: each call is a run of fixes inside a port’s geofence confirmed by a stop (or an AIS gap); load/discharge is the sign of the draught delta over the call. Indicative — arrivals before our AIS history began read from the first observation.

Time-in-port summed by port from the AIS-detected port-call history — the ports this vessel has spent the most time at, longest first.

1. Helsingor· Denmark

   31 h
   3 calls · 10 h avg
2. Helsingborg· Sweden

   8 h
   2 calls · 4 h avg

Based on 5 completed calls observed since — open calls (no departure yet) are excluded. The distribution sharpens as AIS history accrues.